1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * arch/arm/mach-pxa/colibri-pxa3xx.c
4 *
5 * Common functions for all Toradex PXA3xx modules
6 *
7 * Daniel Mack <daniel@caiaq.de>
8 */
9
10 #include <linux/init.h>
11 #include <linux/kernel.h>
12 #include <linux/platform_device.h>
13 #include <linux/gpio.h>
14 #include <linux/etherdevice.h>
15 #include <asm/mach-types.h>
16 #include <linux/sizes.h>
17 #include <asm/system_info.h>
18 #include <asm/mach/arch.h>
19 #include <asm/mach/irq.h>
20 #include "pxa3xx-regs.h"
21 #include "mfp-pxa300.h"
22 #include "colibri.h"
23 #include <linux/platform_data/mmc-pxamci.h>
24 #include <linux/platform_data/video-pxafb.h>
25 #include <linux/platform_data/mtd-nand-pxa3xx.h>
26
27 #include "generic.h"
28 #include "devices.h"
29
30 #if defined(CONFIG_AX88796)
31 #define ETHER_ADDR_LEN 6
32 static u8 ether_mac_addr[ETHER_ADDR_LEN];
33
colibri_pxa3xx_init_eth(struct ax_plat_data * plat_data)34 void __init colibri_pxa3xx_init_eth(struct ax_plat_data *plat_data)
35 {
36 int i;
37 u64 serial = ((u64) system_serial_high << 32) | system_serial_low;
38
39 /*
40 * If the bootloader passed in a serial boot tag, which contains a
41 * valid ethernet MAC, pass it to the interface. Toradex ships the
42 * modules with their own bootloader which provides a valid MAC
43 * this way.
44 */
45
46 for (i = 0; i < ETHER_ADDR_LEN; i++) {
47 ether_mac_addr[i] = serial & 0xff;
48 serial >>= 8;
49 }
50
51 if (is_valid_ether_addr(ether_mac_addr)) {
52 plat_data->flags |= AXFLG_MAC_FROMPLATFORM;
53 plat_data->mac_addr = ether_mac_addr;
54 printk(KERN_INFO "%s(): taking MAC from serial boot tag\n",
55 __func__);
56 } else {
57 plat_data->flags |= AXFLG_MAC_FROMDEV;
58 printk(KERN_INFO "%s(): no valid serial boot tag found, "
59 "taking MAC from device\n", __func__);
60 }
61 }
62 #endif
63
64 #if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
65 static int lcd_bl_pin;
66
67 /*
68 * LCD panel (Sharp LQ043T3DX02)
69 */
colibri_lcd_backlight(int on)70 static void colibri_lcd_backlight(int on)
71 {
72 gpio_set_value(lcd_bl_pin, !!on);
73 }
74
75 static struct pxafb_mode_info sharp_lq43_mode = {
76 .pixclock = 101936,
77 .xres = 480,
78 .yres = 272,
79 .bpp = 32,
80 .depth = 18,
81 .hsync_len = 41,
82 .left_margin = 2,
83 .right_margin = 2,
84 .vsync_len = 10,
85 .upper_margin = 2,
86 .lower_margin = 2,
87 .sync = 0,
88 .cmap_greyscale = 0,
89 };
90
91 static struct pxafb_mach_info sharp_lq43_info = {
92 .modes = &sharp_lq43_mode,
93 .num_modes = 1,
94 .cmap_inverse = 0,
95 .cmap_static = 0,
96 .lcd_conn = LCD_COLOR_TFT_18BPP,
97 .pxafb_backlight_power = colibri_lcd_backlight,
98 };
99
colibri_pxa3xx_init_lcd(int bl_pin)100 void __init colibri_pxa3xx_init_lcd(int bl_pin)
101 {
102 lcd_bl_pin = bl_pin;
103 gpio_request(bl_pin, "lcd backlight");
104 gpio_direction_output(bl_pin, 0);
105 pxa_set_fb_info(NULL, &sharp_lq43_info);
106 }
107 #endif
108
109 #if IS_ENABLED(CONFIG_MTD_NAND_MARVELL)
110 static struct mtd_partition colibri_nand_partitions[] = {
111 {
112 .name = "bootloader",
113 .offset = 0,
114 .size = SZ_512K,
115 .mask_flags = MTD_WRITEABLE, /* force read-only */
116 },
117 {
118 .name = "kernel",
119 .offset = MTDPART_OFS_APPEND,
120 .size = SZ_4M,
121 .mask_flags = MTD_WRITEABLE, /* force read-only */
122 },
123 {
124 .name = "reserved",
125 .offset = MTDPART_OFS_APPEND,
126 .size = SZ_1M,
127 .mask_flags = MTD_WRITEABLE, /* force read-only */
128 },
129 {
130 .name = "fs",
131 .offset = MTDPART_OFS_APPEND,
132 .size = MTDPART_SIZ_FULL,
133 },
134 };
135
136 static struct pxa3xx_nand_platform_data colibri_nand_info = {
137 .keep_config = 1,
138 .parts = colibri_nand_partitions,
139 .nr_parts = ARRAY_SIZE(colibri_nand_partitions),
140 };
141
colibri_pxa3xx_init_nand(void)142 void __init colibri_pxa3xx_init_nand(void)
143 {
144 pxa3xx_set_nand_info(&colibri_nand_info);
145 }
146 #endif
147
148